Jack frame for well pumps



April 1, 1930. J. R. MAHAN ET JACK FRAME FOR WELL PUMPS Filed Jan. 30, 1928 2 Sheets-Sheet 2 Patented Apr. 1, 1930 UNITED STATES PATENT- OFFICE JOSEPH R. MAHAN AND JOHN B. PICARD, OF TOLEDO, OHIO, ASSIGNORS TO THE NATIONAL SUPPLY COMPANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO JACK FRAME FOR WELL PUMPS Application filed January 30, 1828.

Our invention relates to jack frames for well pumps.

Our objects are to provide improved means for clamping casing heads to the jack frames; to provide improved bearings for the bellcrank rockers; to provide means for attaching the upright members of jack frames to the sills or base beams, and to provide improved means for adjusting the said upright members. Other objects appear hereinafter.

Referring to the accompanying drawings, Fig. 1 is a side elevation of a well pumping apparatus which embodies our invention, a portion being in vertical section; Fig. 2, a plan view of the right hand half of the base parts of the said apparatus, parts being broken away and parts being in section while some of the adjacent parts are shown attached and broken off Fig. 3, an elevation of Fig.

11 1, looking towards the right; Fig. 4, a plan,

partly in section showing a modification of the casing head clamp; Fig. 5, an enlarged view of the lower end of Fig. 3, a part being in section, and Fig. 6, a section onthe line 6-6 on Fig. 2.

On Figs. 1, 2 and 3, 1 designates two parallel spaced I-beams which constitute the sills or base members of our jack frame. 2 designates a pair of parallel upright channel-iron members having their lower ends connected by the bolts 3 to the webs of the sills 1, metal blocks 4 being seated in the opposing faces of the sills to form abutments or bearings for the outer faces and lower ends of the 7 uprights 2. The bolts extend through each upright, the adjacent block at and the web of the adjacent sill, the heads of the bolts engaging the opposing faces of the members 2 and the nuts on the bolts engaging the outer faces of the webs of the sills. The bolts 8 are pivotal supports for the uprights 2 which are tied together between their ends by the diagonal braces 5 secured thereto by the bolts 6. The lower ends of the uprights are connected by the horizontal channel-bars 7 secured to their opposite edges by the bolts 8. The upper ends of the uprights are spaced apart by the sleeve 9 held in place by the bolt 10 extending through the sleeve and the uprights.

Serial No. 250,422.

To intermediate portions of the uprights 2 braces 11 are pivoted by the bolt 12 extending through the upper ends of the braces and uprights and the collar 18 which spaces apart the intermediate parts of the uprights. The lower or forward ends of the braces 11 are pivotally attached by the bolts 15 to the block 14 slidable on the sills 1. The block is provided with the bolts 16 whose lower ends have hook-like heads 17 which engage the lower faces of the top flanges of the sills 1, and permit the block 14 to be adjustabl y positioned on the sills. Forwardly of the block 14 is the block 18 connected to the upper face ofthe sills by the bolts 19. The blocks 14 carry screws 20 swiveled therein by their head and the nuts 21 which engage the rear and forward faces of the blocks. The forward ends of the screws are threaded in the blocks 18 and are provided with nuts 22 and 23 engaging the rear and front faces of the block 18.

A block 24k is secured between the sills 1 by the bolts 25 extending through selected holes 26 in the webs of the sills. On the block 2 1 rests the horizontal plate 27. The central part of the rear edge of the plate rests against the abutment 29 curved to keep in engagement with the plate after it has been adjusted horizontally. The four corners of the plate 27 are over arouate slots 30 in the block 24:. Bolts 31 in the corners of the plate 27 stand in the slots and clamp the plate 27 in any selected adjustment of the plate 27 against the abutment 29.

32 designates a bell-crank or triangular rocker having the base member 83, the upright member 34: and the diagonal or hypotenuse member 35. No novelty is claimed herein for the rocker and it need not be further described. Near the rear end of the rocker the base member 33 has the pivot or movable bearing member 36 seated in an elongated step or bearing 37 in the plate 27. To the upper end of the member 34 is attached the line 38 for operating the rocker.

39 is the rocking beam supported at its rear end by the trunnions 4O seated in bearings l1 secured adjustably to the opposing faces of the uprights 2 by the bolts 42, the uprights having several vertically alined holes 43 for the bolts 42.

A link or bar 43 is placed between the upper face of the rocker member 33 and the lower face of the rocker beam 39, the member 33 having a block ll with socket for the lower end of the link, and the beam having a block 45 fitting a socket in the upper end of the link.

The forward ends of the sills 1 support the mechanism for clamping the casing head 46 through the upper end of which the pump rod carried by the forward end of the beam 39 is pivotally suspended.

The casing head is clamped by the opposing jaws l8 and 49. The former is secured by the bolts 50 between the two horizontal channel bars 51 placed with their backs toward each other and with the rear end of the jaw 48 between them. The ads of the assembled bars 51 are seated between the members 52 of the angle plates 53, the remaining members 5d of the angle plates being secured to the webs of the sills l by the bolts 55.

The jaw 49 cl amped between the channel bars 56 by the bolts 57, ihe channel bars being arranged with their backs facing each other and with the forward end of the jaw 49 between them. The ends of the assemblec bars 56 are seated between the heads and flanges of the sills 1 and are guided by the same. Bolts 58 have their rear ends in the members and between the bars 51 near each lateral edge of the jaw 4-8, the bolts being secured in place by the nuts 59 thereon bearing against members 52. The front ends of the bolts 58 extend between the bars 56 and have thereon the nuts 60 which bear against the rear and front sides of the bars 56.

The casing head 46 is seated against the jaw 48 and the rear nuts 6 are backed off so that the jaw 49 can be brought up against the casing head. The front nuts are screwed up so as to make the jaws grip the caslng head firmly, and the rear nuts are screwed up against the bars 56. Plates 61 may be sleeved on the bolts 58 between the bars 56 and the rear nuts 60, bolts 62 passing between the adjacent ends of the bars 56 and through the plates 61 to stiffen and hold in place the ends of the said bars.

The operating line 38 being pulled to the 5 left by any suitable power, causes the T00R61 32 to swing anticlockwise and lift the link as which lifts the rocker beam 39 and causes the pump rod 47 to rise. Vhen the line 38 is allowed to move to the right, the weight of the rocker, the rocker beam and the load suspended on the pump rod causes the parts to resume the position shown in Fig. 1. This cycle of steps may be repeated indefinitely I as long as the pump is in operation.

The uprights may be adjusted by loosening the nuts 22 or 23, and then by turning the screws 20, the uprights and consequently the beam 39 can be moved to the desired positions to bring the pump rod bearing 63 directly in line with the vertical travel of the pump rod. After the beam 39 has been properly adjusted the loosened nuts are tightened up against the block 18.

If the rocker 32 is not properly adjusted with the link vertically below the beam 39, the plate 27 may be adjusted a'ngularly as described so as to bring the forward end of the block 44 on the rocker member 33 directly under the block 45 on the beam.

In Fig. 4 the parts are as in Fig. 3, except that the bars 56 have their ends secured to the members G l of the angle plates 65 by the bolts 66. The remaining members 67 of the angle plates are secured to the webs of the sills 1 by bolts 68 passed through the members (i7 and selected holes 69 in the said webs, such holes being selected as will bring the j aw 49 the closest to the casing head when the latter against the jaw 48. Bolts 70 secure together the members 52 of the angle plates 5-} and the ends of the bars 51.

Ve claim 1. In a pumping jack, a pair of sills having their opposing sides provided with channels, a clamping aw secured to the sills and lying transversely thereof and a movable clamping jaw opposite the first jaw and having its ends guided in the said channels, and means for adjusting the second jaw toward and away from the first jaw.

2. In a pumping jack, a pair of sills having their opposing sides provided with chan nels, a clamping jaw secured to the sills and lying transversely thereof and a movable clamping jaw opposite the first jaw and having its ends guided in the said channels, and means for drawing the second aw toward the first jaw.

3. In a pumping jack, a pair of sills having their opposing sides provided with channels, a pair of bars, a clamping jaw clamped between them, means for securing the bars to the sills, a movable clamping jaw guided by the channelsand arranged to cooperate with the first jaw, and means for drawing the movable jaw toward the other jaw.

4. In a pumping jack. a pair of sills having their opposing sides provided with channels, a pair of bars, a clamping jaw clamped between them, means for securing the bars to the sills, a second pair of bars, a jaw clamped between them, the ends of the second pair of bars being guided by the channels, and means for drawing the second pair of bars toward the first pair of bars.

5. In a pumping ack, a pair of sills having their opposing sides provided with channels, a pair of bars, a clamping jaw clamped between them, means for securing the bars to the sills, a second pair of bars, a jaw clamped for adjusting the angle of the uprights with between them, the ends of the second pair of res ect to the sills.

bars being guided by the channels, bolts each having its ends between the bars of each pair of bars, means for attaching one end of each bolt to one pair of bars, and means on the remaining ends of the bars for causing the second pair of bars to move toward the first pair of bars.

6. In a pumpin jack, a pair of sills having their opposing sides provided with channels, a pair of bars, a clamping jaw clamped between them, angle plates secured to the sills and each having one member lying against the side of the pair of bars, a second pair of bars, a jaw clamped between them, the ends of the second pair of bars being guided by the channels, and means for clamping the said member to the said pair of bars and drawing the second pair of bars toward the first pair of bars.

7. In a pumping ack, a pair of I-beam sills, an upright having its lower end pivoted thereto, a brace having one end pivoted to the up right, a block slidably connected with the top flanges of the sills and pivotally connected to the remaining end of the brace, bolts carried by the block and having hooked heads engaging the under faces of the said flanges to guide the block thereon, a fixed block, means connecting the blocks for adjusting the position of the movable block, a pumping beam pivotally connected to the upright, and a pump rod pivotally carried by the beam, whereby the upright and the beam may be adjusted so as to make the pump rod support on the beam travel in alinement with the pump rod.

8. In a pumping jack, a pair of sills, a block secured thereto, a plate supported thereon and having horizontal pivotal adjustment on the block and provided with a bearing on its upper face, a rocker having a bearing member carried by the first bearing, means for operating the rocker, an abutment for supporting thrusts of the plate and relieving the pivotal support of the plate from shearing strains transmitted by the rocker, a pump rod and means whereby the operationof the rocker operates the pump rod.

9. In a pumping jack, a pair of sills, a pair of uprights having their lower ends in pivotal relation to the sills, abutments supporting the lower ends of the uprights, and relieving the pivotal connection between the uprights and the sills from the shearing strains, a pumping beam pivotally supported by the beam, and means for adjusting the angle of the uprights with respect to the sills.

10. In a pumping jack, a pair of sills, a pair of uprights having their lower ends in pivotal relation to the sills, blocks attached to the sills and having abutments supporting the lower ends of the uprights, and relieving the pivotal connection between the uprights and the sills from the shearing strains, a pumping beam pivotally supported by the beam, and means n testimony whereof we hereunto afiix our signatures.

JOSEPH R. MAHAN. JOHN B. PICARD. 

